Buildings -- General Information
Please refer to PERMITS
for an overview of the permit process.
The minimum setback distance for accessory structures such as detached garages,
storage sheds, play houses and other similar structures is as follows:
Buildings shall not be located within any easement of record unless all approvals
have been obtained from the appropriate utilities; check your recorded deed
or subdivision record for any and all easements.
- one story structures less than
120 square feet in floor area:
No permit is required but securing the structure to insure that it cannot
be damaged by wind with proper tie downs or anchorage is recommended.
- one story structures greater
than 120 square feet in floor area:
All foundations must be designed by an engineer based on the type of soil
under the structure. The drawings must be stamped and sealed by an engineer
licensed in Colorado. This is due to Footing/Foundations which support large
loads, or that are constructed on poor soils may require different foundation
Anchor bolts are required to attach the mud sill to the foundation. The minimum
size for anchor bolts is ½" diam x 10" long. Anchor bolts
must be embedded in the wet concrete a minimum of 7", they shall be a
maximum of 4' apart and be located within 1'-0 of each end of each individual
piece. A minimum of 2 bolts per piece of mud sill is required.
BOTTOM PLATE / MUDSILL
The bottom plate or mud sill is attached to the foundation with anchor bolts.
Pressure treated wood or Redwood must be used.
The minimum stud size is 2" x 4" placed a maximum of 24" apart
in all exterior walls.
All exterior walls are required to be laterally braced, to resist wind and
seismic forces. Typical sway bracing would be let-in 1 X 4 or metal T brace,
4 X 8 exterior plywood sheathing at all corners.
Regardless of square footage, the structure must still comply with the roof-member-to-wall-tie
requirements of the International Residential Code, Chapter R802.11.
A double top plate is required, for exceptions see International Residential
Code, Chapter R602.3.2.
ROOF AND CEILING FRAMING
Rafter ceiling joist sizes are determined by a 30 psf live load and a 10 psf
dead load in combination with span lengths and spacing. Because there are
many combinations of span and floor area, this pamphlet will not attempt to
address all of these. The reader is referred to the International Residential
Code. The minimum sizes will be verified by the Building Inspection office
upon review of your project. Engineered trusses may also be used. Truss engineering
drawings must be submitted for review and approval at time of framing inspection.
Please refer to the International Residential Code for information on plywood,
particleboard sheathing and roofing. Asphalt shingles shall be installed fastened
with 6 nails and hand or self sealed.
Electric meter height must remain at 5'6" above grade including finished
floor of deck. Proper height of overhead service drop must be maintained at
a minimum of 10' above grade and above roofs dependent upon the roof slope
and amount of overhang. The meter may need to be moved in some instances,
such as if the accessory building is built under an overhead electrical service
drop. The meter may not be located in an enclosed room.